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12, easy
its easy just add them then multiply them then find the square root then add 5 million then divide!
Not really, but that depends on what your definition of easy is. Try to divide the irregular quadrilateral into smaller regular pieces -- triangles and squares. You should be able to divide the shape into one square and two triangles. Then you can determine their areas and find the sum.
http://www.kwiznet.com/p/takeQuiz.php?ChapterID=1361&CurriculumID=4 http://www.mathwizz.com/arithmetic/help/help10.htm have a look at these to help you with the answer.
There are two easy ways. You have your choice: -- Multiply the number by 0.25 -- Divide the number by 4